OPERATING INSTRUCTIONS
CAUTION:
Make sure the combined load requirement of your equipment does not exceed your inverter’s
maximum continuous power.
Operation of the 115 Volt AC Outlets
Your inverter is equipped with standard North American three-prong type outlets. Plug the cord from the equipment
you wish to operate into the AC outlet(s). Make sure the combined load requirement of your equipment does not
exceed your inverter’s maximum continuous power.
Note:
The Inverter will not operate appliances and equipment that generate heat, such as hair dryers, electric blankets,
microwave ovens and toasters.
Remember to disconnect the inverter from any power source when not in use.
Operation of the USB Charging Port
1. Connect the inverter to a functioning 12 volt DC power source as described in this Instruction Manual. Make
sure there is adequate space for proper ventilation of the inverter.
2. Press the Power Pushbutton to turn the unit ON.
3. The Power/Fault LED Indicator will light green, indicating a proper connection. If the the Power/Fault LED lights
red, indicating a fault condition exists, refer to the “Troubleshooting” section of this Instruction Manual.
4. Plug the USB-powered device into the inverter’s USB Charging Port and operate normally.
Note:
This unit’s USB Charging Port does not support data communication. It only provides 5 volts/500mA DC power to an
external USB-powered device.
Remember to disconnect the inverter from any power source when not in use.
TROUBLESHOOTING GUIDE
Common Audio/Visual Problems
PROBLEM
SOLUTION
“Buzzing” sound in
audio systems
Inexpensive stereo systems and “boom boxes” may emit a buzzing sound from their
speakers when operated from your inverter. This occurs because the power supply
in the electronic device does not adequately filter the modified sine wave produced
by the inverter. The only solution to this problem is to use a higher quality sound
system.
Television Interference
Your inverter is shielded to minimize interference with TV signals. However, in some
instances, some interference may still occur, particularly where TV signals are weak.
Try the following corrective measures:
• Place the inverter as far as possible from the television, the antenna and the
antenna cables. Use an extension cable, if necessary.
• Readjust the orientation of the inverter, the antenna cables and the TV power
cord to minimize interference.
• Make sure the antenna feeding the television provides an adequate (“snow free”)
signal and that high quality, shielded antenna cable is used.
• Do not use the inverter to operate high-power appliances or tools at the same
time you are using it to operate the TV.
• Make sure the inverter’s case is properly grounded (refer to the “Permanent
Installation Procedure” section of this Instruction Manual).
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Note:
Most vehicle accessory outlet circuits have fuses rated at 15 to 20 amps or greater. To operate at full wattage, either use
the supplied battery clips or directly wire to the power source with wire and fuse (NOT SUPPLIED).
Connecting to a Power Source Using the Supplied Battery Clips
Use the provided Battery Clips (with cables) to connect the Power Inverter directly to the 12 volt power source as
follows:
1. Check to make sure the inverter’s Power Switch has been turned off (no LEDs are lit) and that no flammable
fumes are present in the installation area.
2. Connect the red cable to the red post marked (+) on the back of the inverter . Connect the red battery clip to the
positive terminal of the battery.
3. Connect the black cable to the black post marked (–) on the back of the inverter. Connect the black battery clip
to the negative terminal of the battery.
4. Make sure that all connections between cables and terminals are secure.
Direct Hardwiring to Power Source
(optional connection method; HARDWARE NOT INCLUDED)
TH225:
Use #10 AWG wire if the inverter to power source connection is 6 feet or less. For longer cable lengths use
#8 AWG wire. In either case, protect the positive (+) wire from shorts by installing a 35 amp fuse or circuit breaker
close to the DC power source (battery) terminal.
TH400:
Use #6 AWG wire if the inverter to power source connection is 6 feet or less. For longer cable lengths use
#4 AWG wire. In either case, protect the positive (+) wire from shorts by installing a 50 amp fuse or circuit breaker
close to the DC power source (battery) terminal.
TH750:
Use #4 AWG wire if the inverter to power source connection is 6 feet or less. For longer cable lengths use
#3 AWG wire. In either case, protect the positive (+) wire from shorts by installing a 50 ANL fuse or circuit breaker
close to the DC power source (battery) terminal.
PROCEDURE
1. Check to make sure the inverter’s Power Switch has been turned off (no LEDs are lit) and that no flammable
fumes are present in the installation area.
2. Identify the positive (+) and negative (–) DC power source (battery) terminals.
3. Install a fuse holder or breaker close to the positive (+) terminal of the DC source (battery).
4. Connect a length of wire on one side of the fuse holder or circuit breaker. Connect the other end of the wire to
the positive (+) terminal of the inverter.
5. Connect a length of wire between the inverter’s negative (–) terminal and the DC power source negative (–)
terminal.
6. Connect a short length of wire to the other terminal of the fuse holder or circuit breaker. Mark it “positive”
or “+”.
7. Connect the free end of the fuse or breaker wire to the positive (+) terminal of the DC power source (battery).
8. Insert a fuse appropriate to the inverter in the fuse holder.
9. Test the inverter by turning it on and plugging in a 100 watt lamp or equipment.
10. If the inverter is not properly operating, then refer to the “Troubleshooting” section of this manual.
CAUTION
• Loose connectors may cause overheated wires and melted insulation.
• Check to make sure you have not reversed the polarity. Damage due to reversed polarity is not covered by
manufacturer’s warranty.
IMPORTANT CABLE INFORMATION
Substantial power loss and reduced battery operating time results from inverters installed with cables that are not
able to supply full power. Symptoms of low battery power can result from cables that are either excessively long or
an insufficient gauge. Marine installations are also subjected to vibration and stresses that exceed those of other
mobile installations. Therefore, the installer/operator should be especially aware of the requirements to maintain
secure, tight, water-resistant electrical connections and to provide for strain relief for DC cables and appliance
wiring. Cable insulation must be the appropriate type for the environment.
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